the number of west nile cases reported across the united states jumped by 19 percent this week. west nile virus is spread to humans from infected mosquitoes. the centers for disease control and prevention says more than 3100 west nile cases have been reported so far this year.. and 134 people have died from the disease. almost 40 percent of all cases have been reported in texas. other states with large number of west nile cases include mississippi, michigan, south dakota, louisiana, oklahoma, and california. the kroger grocery chain is voluntarily recalling bagged spinach over fears of listeria contamination. no illnesses have been reported. the recall affects "fresh selections tender spinach" in 10 ounce bags. the spinach has a "best if used by" date of september 16th. it was sold at kroger stores in illinois and a dozen other states.. and at several other grocery stores. if you have any questions.. call toll-free at 1-800-krogers. a consumer advocacy group says children may be eating high levels of mercury along with their tuna sandwiches. the "mercury policy project" coalitio